Subtract 8/28 from 21/54
21/54 - 8/28 is 13/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 28 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 54 × 14 = 756,
21/54 = 21 × 14/54 × 14 = 294/756 - Likewise, for the 2nd fraction, since 28 × 27 = 756,
8/28 = 8 × 27/28 × 27 = 216/756 - Subtract the two like fractions:
294/756 - 216/756 = 294 - 216/756 = 78/756 - After reducing the fraction, the answer is 13/126
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